diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/dynamic_debug.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index 87b1b0121234..dd7f56af9aed 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -71,6 +71,8 @@ static DEFINE_MUTEX(ddebug_lock); static LIST_HEAD(ddebug_tables); static int verbose; module_param(verbose, int, 0644); +MODULE_PARM_DESC(verbose, " dynamic_debug/control processing " + "( 0 = off (default), 1 = module add/rm, 2 = >control summary, 3 = parsing, 4 = per-site changes)"); /* Return the path relative to source root */ static inline const char *trim_prefix(const char *path) @@ -118,6 +120,8 @@ do { \ #define vpr_info(fmt, ...) vnpr_info(1, fmt, ##__VA_ARGS__) #define v2pr_info(fmt, ...) vnpr_info(2, fmt, ##__VA_ARGS__) +#define v3pr_info(fmt, ...) vnpr_info(3, fmt, ##__VA_ARGS__) +#define v4pr_info(fmt, ...) vnpr_info(4, fmt, ##__VA_ARGS__) static void vpr_info_dq(const struct ddebug_query *query, const char *msg) { @@ -130,7 +134,7 @@ static void vpr_info_dq(const struct ddebug_query *query, const char *msg) fmtlen--; } - vpr_info("%s: func=\"%s\" file=\"%s\" module=\"%s\" format=\"%.*s\" lineno=%u-%u\n", + v3pr_info("%s: func=\"%s\" file=\"%s\" module=\"%s\" format=\"%.*s\" lineno=%u-%u\n", msg, query->function ?: "", query->filename ?: "", @@ -213,7 +217,7 @@ static int ddebug_change(const struct ddebug_query *query, static_branch_enable(&dp->key.dd_key_true); #endif dp->flags = newflags; - v2pr_info("changed %s:%d [%s]%s =%s\n", + v4pr_info("changed %s:%d [%s]%s =%s\n", trim_prefix(dp->filename), dp->lineno, dt->mod_name, dp->function, ddebug_describe_flags(dp->flags, &fbuf)); @@ -273,7 +277,7 @@ static int ddebug_tokenize(char *buf, char *words[], int maxwords) buf = end; } - if (verbose) { + if (verbose >= 3) { int i; pr_info("split into words:"); for (i = 0; i < nwords; i++) @@ -333,7 +337,7 @@ static int parse_linerange(struct ddebug_query *query, const char *first) } else { query->last_lineno = query->first_lineno; } - vpr_info("parsed line %d-%d\n", query->first_lineno, + v3pr_info("parsed line %d-%d\n", query->first_lineno, query->last_lineno); return 0; } @@ -447,7 +451,7 @@ static int ddebug_parse_flags(const char *str, struct flag_settings *modifiers) pr_err("bad flag-op %c, at start of %s\n", *str, str); return -EINVAL; } - vpr_info("op='%c'\n", op); + v3pr_info("op='%c'\n", op); for (; *str ; ++str) { for (i = ARRAY_SIZE(opt_array) - 1; i >= 0; i--) { @@ -461,7 +465,7 @@ static int ddebug_parse_flags(const char *str, struct flag_settings *modifiers) return -EINVAL; } } - vpr_info("flags=0x%x\n", modifiers->flags); + v3pr_info("flags=0x%x\n", modifiers->flags); /* calculate final flags, mask based upon op */ switch (op) { @@ -477,7 +481,7 @@ static int ddebug_parse_flags(const char *str, struct flag_settings *modifiers) modifiers->flags = 0; break; } - vpr_info("*flagsp=0x%x *maskp=0x%x\n", modifiers->flags, modifiers->mask); + v3pr_info("*flagsp=0x%x *maskp=0x%x\n", modifiers->flags, modifiers->mask); return 0; } @@ -540,9 +544,8 @@ static int ddebug_exec_queries(char *query, const char *modname) } i++; } - if (i) - vpr_info("processed %d queries, with %d matches, %d errs\n", + v2pr_info("processed %d queries, with %d matches, %d errs\n", i, nfound, errs); if (exitcode) @@ -780,7 +783,7 @@ static ssize_t ddebug_proc_write(struct file *file, const char __user *ubuf, tmpbuf = memdup_user_nul(ubuf, len); if (IS_ERR(tmpbuf)) return PTR_ERR(tmpbuf); - vpr_info("read %d bytes from userspace\n", (int)len); + v2pr_info("read %zu bytes from userspace\n", len); ret = ddebug_exec_queries(tmpbuf, NULL); kfree(tmpbuf); @@ -968,7 +971,7 @@ int ddebug_add_module(struct _ddebug *tab, unsigned int n, list_add(&dt->link, &ddebug_tables); mutex_unlock(&ddebug_lock); - v2pr_info("%3u debug prints in module %s\n", n, dt->mod_name); + vpr_info("%3u debug prints in module %s\n", n, dt->mod_name); return 0; } |